Hot water reservoir in coffee urn



YJune 24, 19M., v l F, c. EHRENREICH HOT WATER RESERVOIR IN COFFEE URNFiled Oct. 5. 1940 wave will".

j l yf@ Patented June 24, 1941 UNITED STATES FFICE HOT WATER RESERVOIR NCOFFEE URN Application Cctober 5, 1940, Serial No. 359,845

1 Claim.

This invention relates to a hot Water supply or reservoir in coiee urns.

Ordinarily restaurants do not have a separate boiler for providing hotwater. In the event that hot water is needed for tea, hot chocolate orother beverage uses, it is usually withdrawn from the boiler of thecoffee urn. This withdrawal deprives the urn of its required amount ofwater in proportion to the coiee used and results in bitter overlystrong coffee. Sometimes when hot water is frequently withdrawn from theboiler of the coffee urn, it is necessary to replenish the supply ofWater in the boiler. When this is done the remaining hot water goes tothe top of the boiler and the new cold water passes to the bottom. Sincethe withdrawal faucet is ordinarily at the bottom, Water then withdrawnfrom the boiler will be cold water and not suitable for tea, chocolateor other hot water uses.

It is among the objects of my invention to solve the above problems byproviding a hot Water supply construction within the boiler of a coffeeurn from which hot water may be withdrawn without diminishing the hotwater supply for coffee use in the boiler itself. Hot water Withdrawnfrom my additional separate hot water supply construction will notaliect the required volume of hot water in the bolier, so that at alltimes coffee will be prepared which is consistent and has the rightamount of water for the coffee used. In addition my hot water supplyconstruction being positioned with its open top portion at the upperportion of the boiler will always receive and be lled with the hottestwater, so that even when the boiler is partly replenished with coldWater the remaining hot water rising to the top will ll the separate hotwater supply reservoir. the likelihood of the withdrawal of cold wateris substantially eliminated.

My invention also contemplates such other objects, advantages andcapabilities as will later more fully appear and which are inherentlypossessed by my invention.

While I have shown in the accompanying drawing a preferred form of myinvention, yet I desire it understood that the samle is susceptible ofmodication and change without departing from the spirit of my invention.

Referring to the drawing, Fig. 1 is a front elevational view partlybroken away showing the location of my hot water reservoir, and Fig. 2is an enlarged sectional view showing the details of my hot waterreservoir.

For purposes of illustration I show an urn Il! With my construction`having an outer casing I I. Water is provided for the hollow interior orboiler I2 by a suitable water inlet pipe I3 leading from a water sourceof supply. Spaced jars I4 are positioned within the boiler I2. Coffeemakers I5 are positioned within the jars III, closed by covers IS, andsuitable spray members II provide hot water from the boiler I2 to thecoffee makers I5. The water is heated by suitable burners I8. Faucets I9are provided on the outside of the casing and are suitably connected forthe withdrawal of coffee from the jars It. Suitable coffee gauge 2!) anda water gauge 2I are provided to be read from the exterior of thecasing.

In combination with the foregoing structure, I provide a pipe 22extending through and supported by the walls of casing I I adjacent itsmiddie portion. At its outer end pipe 22 has an enlarged portion 23which is screw threaded to receive the screw threaded shank 24 of afaucet 25. Attached to the inner end of pipe 22 is the pipe extension 26of support 2l. Said support 21 has a rounded body portion 28 surroundedby an upper ange portion 29. A can or reservoir 33 has its bottomportion SI supported on the upper flange portion 29 of support 2l. Theside walls 32 of can 30 extend upwardly within boiler I2 to its upperportion. The top 33 of can 3B is open.

In use water is supplied to boiler I2 through water inlet pipe I3 andthe water is heated by burners I8. The hottest water at the upperportion ci boiler I2 enters reservoir 3D through its open top 33 untilthe can is filled. When hot water is needed faucet 25 is opened and hotwater passes fromy reservoir 38 down through opening 34 in the bottom 3Iinto the well 35 in body portion 23 in support Z'I and thence throughpassageway 33 in pipe extension 26 and passageway 31 in pipe 22 and outthrough faucet 25. The withdrawal of this water from reservoir 30 doesnot diminish the supply of water in boiler I2.

If at any time water is added to hot water in boiler I2, the hot waterwill pass to the top of boiler I2 to rell reservoir SII. This insuresthe withdrawal of hot Water from faucet 25.

Having thus described my invention, I claim:

In combination with a coffee urn having a casing, a boiler, coffeemakers adapted to hold coffee and coffee holders Within said casing, apipe leading into said boiler for supplying water l' therefor, means forheating said boiler and the water therein, said boiler of such a sizethat the desired amount of heated Water may contact the coffee in thecoiee makers and pass as liquid coffee of consistent strength into thecoffee holders, means manually operable ony the exterior of the coieeurn for withdrawing hot liquid coiee of consistent strength from thecoiee holders, a hot walter reservoir comprising a hollow supportattached to said casing and extending within said boiler, a reservoirsupported on said support and extending upwardly to the upper portion ofsaid boiler, and having an opening to receive hot water from said boilerbefore said water contacts said coffee makers, and Without diminishingthe supply of water for colee of consistent strength, and a faucetcommunicating with said hollow support, and manually operable from theexterior of the urn for withdrawing hot water from said hot waterreservoir without diminishing the water ,supply for the coiee makers andholders.

FRANK C. EHRENREICH.

